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Direct Torque Control System of Induction Motor Based on the Fuzzy Control Technology

机译:基于模糊控制技术的电动机直接扭矩控制系统

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A new design of fuzzy direct torque control system for induction motor is introduced, it is based on strategy of modulating the duty cycle to decrease the torque and stator flux ripple. In this design, the hysteresis comparator and the space voltage vector selector of traditional direct torque control system are replaced by fuzzy controller. The fuzzy controller uses a three-input single-output structure, its three input variables are the torque error, flux error and flux angle amplitude, it is responsible for regulating the inverter switch state. The new system can reduce torque and flux ripple, can enhance robustness and adaptability of the system, and can improve the static and dynamic performances of the system. The simulation results on Matlab/Simulink software platform show that the proposed system has better control performance, compared to the conventional direct torque control system.
机译:引入了一种用于感应电动机的模糊直接扭矩控制系统的新设计,基于调制占空比的策略来减小扭矩和定子通量波纹。在这种设计中,传统直接扭矩控制系统的滞后比较器和空间电压矢量选择器由模糊控制器代替。模糊控制器采用三输入单输出结构,其三个输入变量是扭矩误差,磁通误差和磁通角幅度,它负责调节变频器开关状态。新系统可以减少扭矩和磁通波纹,可以提高系统的稳健性和适应性,可以提高系统的静态和动态性能。 MATLAB / SIMULINK软件平台上的仿真结果表明,与传统的直接扭矩控制系统相比,所提出的系统具有更好的控制性能。

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